Предмет: Химия, автор: varycha99

приготувати 120г розчину з масовою часткою речовини 6 відстотків. розв'яжіть будь ласка задачу з повним поясненням!!!!!! ДАЮ 30 БАЛІВ!!!

Ответы

Автор ответа: danilavin7

0

Ответ:

ми можемо приготувати 120 г розчину з масовою часткою речовини 6 відсотків, додавши 7.2 г речовини до початкового розчину.

Объяснение:

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: angelina20119

Read and complete the sentnces | ПОМОГИТЕ СРОЧНО ДАМ 20/10 БАЛОВ

2 года назад

Предмет: Физика, автор: snikaah

Аналiз експерименту та його результатів Проаналізуйте експеримент і його результати. Сформулюйте висновок, у якому зазначте: 1) фізичні величини, які ви визначали; 2) чи впливає і якщо впливає, то як саме впливає радіус обертання на: період обертання, обертову частоту, лінійну швидкість, доцентрове прискорення; 3) які чинники вплинули на точність одержаних результатів.

2 года назад

Предмет: Алгебра, автор: timotiodessa

помогите плиз за ранее спасибо

2 года назад

Предмет: Английский язык, автор: somekindofdisaster

Помогите с тестом по английскому, пожалуйста, даю 20 баллов

1. They __________ in New-York since 1989.
- has been living
- has lived
- have been living
- have lived

2. John __________ there for five years.
- has been working
- has worked
- have been working
- have worked

3. She ________________ a book for the past two years.
- has been writing
- has written
- have been writing
- have written

4. He _____________________ football for 5 years.
- hasn't been playing
- has played
- have been playing
- have played

5. We _____________________ enough water. That’s why we feel thirsty.
- hasn't been drinking
- hasn't drunk
- haven't been drinking
- haven't drunk

6. Oh! Look! there are the Smiths. ____________ around Asia?
- Has they been travelling
- Has they travelled
- Have they been travelling
- Have they travelled

7. How long ____________ for me?
- Has you been waiting
- Has you waited
- have you been waiting
- have you waited

8. The children are in the yard. They __________ hide-and-seek since breakfast time.
- Has been playing
- Has played
- have been playing
- have played

9. Barbara ________ her make-up for half an hour but _________ it yet.
- have been doing…haven't finished
- is doing…has finished
- has been doing…hasn't finished
- has done…hasn't been finishing

10. Nice to meet you. I ___________ you for a long time
- haven't seen
- didn't see
- haven't been seeing
- hasn't been seeing

7 лет назад

Предмет: Математика, автор: Аноним

Вот тест... Сложна >:(

7 лет назад